Intel Core i9 9900K 's Advantages
Integrated graphics card
Higher base frequency (3.6GHz vs 1.7GHz)
Larger L3 cache size (16MB vs 12MB)
Intel Core Ultra 7 155UL 's Advantages
Released 5 years and 6 months late
Higher specification of memory (5600 vs 2666)
Larger memory bandwidth (89.6GB/s vs 41.6GB/s)
Newer PCIe version (4 vs 3.0)
More modern manufacturing process (7nm vs 14nm)
Lower TDP (15W vs 95W)